The small Magellanic Cloud star cluster NGC 458.: A new UBVI photometric study

被引：11

作者：

Alcaino, G

Alvarado, F

Borissova, J

Kurtev, R ^{[1
]}

机构：

[1] Univ Sofia, Dept Astron, Sofia 1164, Bulgaria

[2] Isaac Newton Inst Chile, Bulgarian Branch, Sofia 1164, Bulgaria

[3] Minist Educ Chile, Isaac Newton Inst Chile, Santiago, Chile

[4] Bulgarian Acad Sci, Astron Inst, BU-1784 Sofia, Bulgaria

[5] Isaac Newton Inst Chile, Bulgarian Branch, Sofia 1784, Bulgaria

来源：

ASTRONOMY & ASTROPHYSICS | 2003年 / 400卷 / 03期

关键词：

stars : Hertzsprung-Russell (HR) and C-M diagrams; galaxies : stellar content; galaxies : Magellanic clouds; galaxies : individual : SMC; galaxies : stars clusters;

D O I：

10.1051/0004-6361:20030069

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new photometry of the Small Magellanic Cloud star cluster NGC 458 in UBVI filters. We determine the reddening E(B - V) = 0.04 +/- 0.02. By comparison with the isochrones by Bertelli et al. (1994) we derive an age of approximate to140 Myr. Three candidate blue straggler stars are proposed. The evolved "blue loop" stars of NGC 458 have masses between 4 and 5 M. and are hotter than model predictions.

引用

页码：917 / 921

页数：5

共 18 条

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[12] TECHNIQUE FOR THE SIMULTANEOUS DETERMINATION OF GLOBULAR-CLUSTER METALLICITY AND REDDENING USING (V,V-I) COLOR-MAGNITUDE DIAGRAMS [J].